Sawing-machine.



No. 697,497. Patentad Apr.-|5, I902.

G. C. KNAPP.

SAWING MACHINE.

(Application filed June 29, 1901.)

(No Model.) 3 Sheets-Sheet I.

. 6: C. Imp a. l/vi/inmssazs I No. 697,497. Patented Apr. I5, I902.

G. C. KNAPP SAWING MACHINE.

(Application filed Jugs 29, 1901.)

3 Sheets-Sheet 2.

(No Model.)

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a. c. KNAPP. SAWING MAGHINE.

(Application filed June 29, 1901.)

Patented Apr. l5, I902.

(No Model.)

3 Shea ts--Sh.eet 3.

311 canto c arm , lowing is a specification.

UNITED STATES PATENT O FICE.

GILMAN CLIFFORD KNAPP, EUREKA, CALIFORNIA.

SAWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 697,497, dated .April15, 1902.

Application filed June 29, 1901- Serial No. 66,590. (No model.)

To all whom, it may concern.-

Be it known that I, GILMAN CLIFFORD KNAPP, a citizen of the UnitedStates, residing at Eureka, in the county of Humboldt and State ofCalifornia, have invented a new and useful Sawing-Machine, of which thefol- This invention relates generally to sawingmachines, and moreparticularly to one for sawing shakes or thin strips of wood.

The object of the present invention is to provide an appliance forsawing-machines by means of which the blocks from which the shakes areto be sawed can be quickly and easily fed to the saw, and a stillfurther object is to provide improved mechanism for dropping the remnantat the proper time and also feeding a new block to the machine.

With these various objects in view the in.- vention consists in thepeculiar construction of the various parts and their novel combinationor arrangement, all of which will be fully described hereinafter andpointed out in the claims.

In the drawings forming part of this specification, Figure 1 is a sideview of a machine providedwith myimproved appliance. Fig. 2 is a topplan view of the same. Fig. 3 is a detail perspective view of theappliance. Fig. 4 is a detail elevation illustrating the means foroperating the feed-roll from the carriage feed-works. Figs. 5 and 6illustrate details of construction, and Fig. 7 is a detail plan view ofthe guard for the grooving-saws.

In carrying out my invention I employ any desired operating mechanism Afor moving the carriage B back and forth upon the track 0 for thepurpose of bringing the block of wood into contact with the saw D, whichis also operated in any suitable manner. The purpose of my invention isto laterally feed the block of wood to be sawed, so that at eachreciprocation of the carriage the block will be moved a slight distancelaterally, so that when next presented to the saw the requisite amountor strip of wood willbe taken off.

B indicates skids or rolls upon which the block to be sawed is placed.

E indicates the feed-rolls, which are mounted upon the shafts F,journaled in suitable brackets F and F respectively, the bracket F beingconnected to an arm G, which extends across one end of the carriage andis fixed, While the bracket F is attached to an arm H, which extendsalso across the opposite end of the carriage, but is pivoted at H andhas a spring H connected therewith, the purpose of said spring being tonormally throw the bracket F and roller E inwardly. Each shaft F has aratchet-wheel I and 1 upon its upper end, and levers K and L are alsomounted,respectively, above the said ratchet-wheels, the lever Kcarrying a pawl K, which ongages the ratchet I, while the lever Lcarries a pawl L, which engages the ratchet I.

The levers K and-L are connected by means of a connecting-rod M, so thatthe said levers move in unison, and consequently the pawls, ratchet-s,and feed-rolls. The lever K has a pitman N connected thereto, theopposite end of said pitman being pivotally connected to a lever 0, saidlever being pivoted at O to a bracket 0 and has its lower end 0 depending into the carriage and into the path of a roller P, mounted upon theend of a rocking lever P, pivoted or journaled upon the shaft P arrangedat the end of the carriage, the said rocking lever being so arrangedthat it is moved up and down at each reciprocation of the carriage, andthe roller P coming in contact with the beveled end 0 of the lever 0causes the same to rock or vibrate, and consequently operate thefeed-rolls, a coilspring Q being connected to the upper end of the leverO for the purpose of returning it when the roller P descends. It willthus be understood that the block to be sawed is cut the exact distanceto fit snugly between the feed-rolls and is placed upon the skids orrolls against the face of the saw. Upon the reciprocation of thecarriage the feed-rollers will act to feed the block laterally therequisite amount, and these operations will continue until the block hasbeen nearly consumed. When the block has been sawed to this extent, itbecomes necessary to drop the remnant and place a new block upon thecarriage.

I will now describe the mechanism for dropping the remnant. R representsa rod arranged adjacent to the forward end of the machine and carrying aroller R at its upper end, the lower end of said rod being connected tothe foot-treadle R By pressing combination with the vertically-arrangedupon the treadle R the rod R is projected vertically, moving the rollerR into such position that it will contact with the free end H of the armH. As soon as the end H contacts with the roller R the arm is turnedupon its pivot H and throwing the feed-roller out of contact with theblock, releasing it at that end. Simultaneous with the withdrawal of thefeed-roller at that end I operate a disengaging-plate S, which moves theopposite end of the block away from the opposite feed-roll, said platebeing rigidly attached to a rod S, which is connected to the lower endof a rocking lever S which in turn is connected to the arm H by means ofa link S so that when the arm H is operated by means of the roller R androd R the plate S will be operated in unison therewith. The operation ofthese parts immediately drops the block, and another block can then beinserted between the feed-rolls and placed against the face of the saw,the spring H serving to return the feedrolls and the various parts totheir normal positions the moment the block is released.

Having thus fully described myinvention, what I claim as new, and desireto secure by Letters Patent, is

1. In a sawing-machine attachment, the

feed-rolls, of the means arranged upon the carriage for operating thesaid feed-rolls upon the reciprocation of said carriage, together withmeans for moving one of the rolls out of engagement with the remnant ofthe block and simultaneously operating a disengagingplate fordisengaging the block from the other feed-roll, substantially asdescribed.

2. In a sawingmachine attachment, the combination with the feed-rolls,of the brackets and arms carrying the said feed-rolls, one of said armsbeing pivoted and normally held in position by means of a. spring, theratchets, pawls, levers and connecting-rods, the pitman and rockinglever, the disengaging-plate, the rod to which said disengaging-plate isattached, the rocker-arm connected to the pivoted feed-roll arm by meansof a link, and the vertically-movable rod adapted to be projected intothe path of the free end of the pivoted arm for the purpose ofsimultaneously disengaging the said feed-roll and operating thedisengaging-plate, substantially as and for the purpose described.

GILMAN CLIFFORD KNAPP.

Witnesses:

JOSEPH P. TRACY, HAROLD I'I. BARNARD.

